| 释义 |
acrosin, n. Biochem.|ˈækrəʊsɪn|
[f. acrosome n. + -in1.]
A proteolytic enzyme found in the acrosome of mammalian spermatozoa, which is thought to facilitate penetration of the ovum at fertilization by digesting the outer protein coat of the ovum.
1970L. J. D. Zaneveld et al. in FEBS Lett. XI. 345 The acrosome of the mammalian spermatozoon is a cap over the anterior end of the sperm head containing digestive enzymes... One of these enzymes..has been assigned the name acrosin. 1984L. W. Browder Developmental Biol. (ed. 2) ix. 385 Penetration of the zona..has been ascribed to the action of an acrosomal proteolytic enzyme, acrosin, which has been proposed to digest a path through the zona in advance of the sperm. 1988Nature 6 Oct. 546/1 Proteins previously tested as contraceptive immunogens include the sperm enzymes hyaluronidase, acrosin and lactate dehydrogenase C-4. 1992Jrnl. Assisted Reproduction & Genetics IX. 34/2 The significant differences detected between filtrates in terms of spermatozoan motility and acrosin content cannot be accounted for by changes in the membrane integrity. |